50 km ultra
50K ultra training plan
A first ultra for a lot of people — finish well, not just finish. Mostly easy running, one quality session once the base is there, and a long run that grows toward the day you picked.
Included in €19/month. 14 days free, no card.
- Full build
- 24 weeks
- Easy weeks
- 10 weeks
- Closer to the date
- 12 weeks
- Last weeks
- 2 weeks
What a week actually looks like
A week from the same engine that writes the real plan — including the minutes, not a template.
Easy weeks
- MonStrength · 40 min
- TueRest
- WedUphill walk/jog · 45 min
- ThuEasy walk/jog · 45 min
- FriRest
- SatLong easy · 90 min
- SunRest
Closer to the date
- MonQuality intervals · 60 min
- TueRest
- WedStrength · 60 min
- ThuUphill walk/jog · 60 min
- FriRest
- SatLong easy · 90 min
- SunRest
This sample uses a typical setup for this objective. Your days, hours and terrain change the week. Wrecked, missed or travel rewrites it.
When a 50 km week goes wrong — one specific week, written by this engine, then rewritten from a bad night.
A 50 km is the distance where most runners discover that a marathon plan does not transfer. The problem is rarely speed. It is time on feet, climbing, eating while moving, and arriving at the start line without six months of accumulated fatigue in your legs.
This plan puts the bulk of its work at conversational pace — easy enough to hold a full sentence. That is not a soft option, it is the part most people skip and then wonder why the last 15 km falls apart. One quality session per week appears only once you have the base to absorb it, and only when you turned up rested.
The long run is the spine of the block, and it is capped by what you have actually done rather than what the calendar wishes you had done. If your longest outing this year is 90 minutes, week one does not hand you four hours. It builds from the band you reported in setup.
The block will go sideways. Log a wrecked week and the next weeks get lighter, not louder. Miss a Tuesday and it is not stacked onto Wednesday. Travel for work and the mountain days become whatever is possible where you are. The race date does not move unless you move it.
How the block is shaped
These are the suggested lengths. A shorter window cuts base first and keeps the specific block and the taper, and the plan tells you when the window you chose is thinner than the objective wants.
Easy weeks · 10 weeks
Aerobic base: easy volume, a growing long run, and the habit of finishing sessions able to talk. No quality work is forced on a beginner here.
Closer to the date · 12 weeks
Race-specific: one quality dose a week, long runs on terrain that resembles the course, and practice with the food and pack you intend to actually use.
Last weeks · 2 weeks
Volume comes down, a little intensity stays in short doses, and the last two weeks are about sleep, kit and not inventing anything new.
Strength in this plan
One strength day a week while the plan builds. Use the column you have the kit for — the home version needs a step, a chair and a backpack.
At home
2–3 rounds, a minute's rest between
- Step-up8 each leg
- Slow step-down6 each leg
- Single-leg Romanian deadlift8 each leg
- Single-leg calf raise12 each leg
- Bent-knee calf raise15
- Side plank25 s each side
In a gym
2–3 sets of each, 2 min rest on the heavy lifts
- Trap bar deadlift6
- Dumbbell step-up8 each leg
- Slow step-down6 each leg
- Weighted single-leg calf raise10 each leg
- Seated calf raise12
- Side plank30 s each side
Built for
- Runners stepping up from a marathon or a 20–30 km trail race
- Races up to about 80 km: if the day is 7–10 hours, this is the plan
- Anyone who has a date in mind and wants the weeks written backwards from it
- People whose training weeks get interrupted by shift work, travel or young kids
Not for
- Anyone looking for a fixed twelve-week PDF to print and follow regardless of how the body responds
- Runners who want a guaranteed finish time — this writes training, it does not predict results
Ridgework writes the training weeks. It does not replace medical advice: pain, illness or an injury is a doctor's or a physio's call, and the plan only changes the week around it.
Why a plan that adapts
A printed plan assumes every week goes as written. When one does not, you skip and fall behind, or cram the missed work back in and arrive tired. Ridgework rewrites the next days from what you logged, keeps your date, and says what changed and why.
Kit this assumes
- Trail shoes already broken in on a long run
- A pack or vest you have carried loaded
- Poles if your course has real climbing
Questions
How long does it take to train for a 50K?
The full block here is 24 weeks: about 10 weeks of aerobic base, 12 specific, and a 2-week taper. A shorter window still writes a plan — it just cuts base first rather than pretending fitness appears faster.
Can I train for a 50K in 12 weeks?
Yes, with honest expectations. Twelve weeks compresses the base and keeps the specific block and taper. You get a written week either way; what you do not get is the aerobic depth that twenty-four weeks builds. The plan says so rather than hiding it.
How many days a week will I run?
You choose the days you can train in setup, minimum two. The week is placed on those days — rest goes on the days you said you cannot train, not on the days a template assumed.
What happens if I miss a week?
Nothing is stacked to catch up. A missed session is logged, the next days are rewritten around the fatigue you reported, and the race date stays where you put it.
Start this plan
No card needed. You set the date, answer a short setup. Your week appears. The next two are written ahead.
14 days free, no card. On day 15 your plan pauses unless you add a card: €19/month, cancel anytime.
Ridgework writes training weeks for trail and mountain. It is not a medical device, not healthcare, and not a substitute for a clinician, a guide, or rescue. Research citations inform the week structure; they are not prescriptions. You remain responsible for safety in the mountains and in training.